Frequency conversion air source heat pump frost suppression operation method based on frost suppression performance diagram

The invention discloses a variable-frequency air source heat pump frost suppression operation method based on a frost suppression performance diagram, and belongs to the technical field of frost suppression. Firstly, a frequency conversion unit frost suppression performance diagram under the current working condition is drawn; secondly, according to the heating capacity range and the frost suppression potential reflected by the frost suppression performance diagram and according to the building load demand at the moment, a heating target and a frost suppression operation target are determined; thirdly, the compressor frequency and the outdoor fan frequency of the variable-frequency air source heat pump are determined according to the requirements and the targets; and finally, frequency output of a compressor and a fan is controlled through a unit frost suppression operation controller, and the heating and frost suppression requirements are met. On the basis that the heating capacity is met, effective frost re